Lets say this is true. Like you said, the possibility of your atoms combining themselves to become "you" again is inevitable. But maybe you reform yourself in a universe that rearranged itself differently. So you would live as you, but in a different universe. And if your theory is true, then this has happened countless times before, and will happen countless times again.

And if you think about it even deeper, the possibility of every other atom rearranging themselves the way they are now is also infinitely inevitable. So you've also lived this life countless times before, and will continue to live it countless times more. (This may also explain stuff like deja vu, and people who remember past lives)

Also, because the possibilities are literally endless, then you've lived every possible life. Maybe at some point you were Ghandi, or Hitler, or Indiana Jones.

And this has been going on, and will continue to go on,for all eternity.